Remove expand/collapse all button from kartik expandrowcolumn header yii2

Question

I want to remove the button to expand/collapse all on the ExpandRowColumn in gridview which i used kartik's widget. 'allowBatchToggle' => false would only disable the button but not hide it entirely. I want to make it not visible.

Column in gridview

    [
        'class' => 'kartik\grid\ExpandRowColumn',
        'width' => '50px',
        'value' => function ($model, $key, $index, $column) {
            return GridView::ROW_COLLAPSED;
        },
        'detailUrl' => Url::to(['/sysadmin/user/row-expand']),
        'expandOneOnly' => true,
        'allowBatchToggle' => false,
        'expandOneOnly' => true
    ],

Here it shows the icon i want to remove only in the headers.